Stress relaxation mechanisms in thin Sn films and its alloys : Sn whisker formation and its mitigation

Jendrik Stein
The present thesis project deals with the build-up of stresses and stress relaxation mechanisms in thin Sn(-based) films electro-deposited on pure Cu or Cu-alloy substrates. In particular, the spontaneous formation of Sn whiskers, i.e. the growth of single crystalline, needle-like filaments on the Sn film surface, and its mitigation, is taken into focal point of this study. Thereby, new-developed and well-known methods and analysis techniques have been applied in order to investigate i) the specimen...
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